Liquid crystals in nondestructive testing
| Autor: | James L. Fergason |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Dominant wavelength business.industry Cholesteric liquid crystal Scattering Materials Science (miscellaneous) Industrial and Manufacturing Engineering Optics Liquid crystal Attenuation coefficient Phase (matter) Nondestructive testing Business and International Management business Visible spectrum |
| Zdroj: | Applied optics. 7(9) |
| ISSN: | 1559-128X |
| Popis: | The cholesteric phase is associated with scattering effects that give rise to iridescent colors, the dominant wavelength being influenced by very small changes in temperature, which can be as large as 1000 A shift per degree. This unusually high temperature sensitivity has given rise to the use of the cholesteric phase as a sensitive thermometer and thermal mapping media. This paper reviews the optical effects in the cholesteric phase with some new additions that are particularly relevant to thermal mapping. An attempt has been made to give a complete picture of the cholesteric liquid crystal as applied to nondestructive testing, rather than to review the work actually being done in this field. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|